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Dr. Tyler Reid, co-founder and CTO of Xona Space Systems, discusses a new type of global navigation satellite system (GNSS). Xona Space Systems plans to provide centimeter-level positioning accuracy and will serve the emerging autonomous vehicle community, where precise navigation is key. Reid discusses the advantages and technical challenges of a low Earth orbit (LEO) solution.
Tyler Reid
Tyler Reid is co-founder and CTO of Xona Space Systems. Previously, Tyler worked as a Research Engineer at the Ford Motor Company in localization and mapping for self-driving cars. He has also worked as an engineer at Google and as a lecturer at Stanford University, where he co-taught the GPS course. Tyler received his PhD (2017) and MSc (2012) in Aeronautics and Astronautics from Stanford and B.Eng. (’10) in Mechanical Engineering from McGill.
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This year’s Swiss Robotics Day – an annual event run by the EPFL-led National Centre of Competence in Research (NCCR) Robotics – will be held at the Beaulieu convention center in Lausanne. For the first time, this annual event will take place over two days: the first day, on 4 November, will be reserved for industry professionals, while the second, on 5 November, will be open to the public.
Visitors at this year’s Swiss Robotics Day are in for a glimpse of some exciting new technology: a robotic exoskeleton that enables paralyzed patients to ski, a device the width of a strand of hair that can be guided through a human vein, a four-legged robot that can walk over obstacles, an artificial skin that can diagnose early-stage Parkinson’s, a swarm of flying drones, and more.
The event, now in its seventh year, was created by NCCR Robotics in 2015. It has expanded into a leading conference for the Swiss robotics industry, bringing together university researchers, businesses and citizens from across the country. For Swiss robotics experts, the event provides a chance to meet with peers, share ideas, explore new business opportunities and look for promising new hires. That’s what they’ll do on Friday, 4 November – the day reserved for industry professionals.
On Saturday, 5 November, the doors will open to the general public. Visitors of all ages can discover the latest inventions coming out of Swiss R&D labs and fabricated by local companies – including some startups. The event will feature talks and panel discussions on topics such as ethics in robotics, space robotics, robotics in art and how artificial intelligence can be used to promote sustainable development – all issues that will shape the future of the industry. PhD students will provide a snapshot of where robotics research stands today, while school-age children can sign up for robot-building workshops. Teachers can take part in workshops given by the Roteco robot teaching community and see how robotics technology can support learning in the classroom.
In the convention center’s 5,000 m² exhibit hall, some 70 booths will be set up with all sorts of robot demonstrations, complete with an area for flying drones. Technology developed as part of the Cybathlon international competition will be on display; this competition was introduced by NCCR Robotics in 2016 to encourage research on assistance systems for people with disabilities. Silke Pan will give a dance performance with a robotic exoskeleton, choregraphed by Antoine Le Moal of the Béjart ballet company. Talks will be given in French and English. Entrance is free of charge but registration is required.
The 2022 Swiss Robotics Day will mark the end of NCCR Robotics, capping 12 years of cutting-edge research. The center was funded by the Swiss National Science Foundation and has sponsored R&D at over 30 labs in seven Swiss institutions: EPFL, ETH Zurich, the University of Zurich, IDSIA-SUPSI-USI in Lugano, the University of Bern, EMPA and the University of Basel. NCCR Robotics has given rise to 16 spin-offs in high-impact fields like portable robots, drones, search-and-rescue systems and education. Together the spin-offs have raised over CHF 100 million in funding and some of them, like Flyability and ANYbotics, have grown into established businesses creating hundreds of high-tech jobs. The center has also rolled out several educational and community initiatives to further the teaching of robotics in Switzerland.
After the center closes, some of its activities – especially those related to technology transfer – will be carried out by the Innovation Booster Robotics program sponsored by Innosuisse and housed at EPFL. This program, initially funded for three years, is designed to promote robotics in universities and the business world.
The first day of the event, 4 November, is intended for robotics-industry businesses, investors, researchers, students and journalists. It will kick off with a talk by Robin Murphy, a world-renowned expert in rescue robotics and a professor at Texas A&M University; she will be followed by Auke Ijspeert from EPFL’s Biorobotics Laboratory, Elena García Armada from the Center for Automation and Robotics in Spain, Raffaello D’Andrea (a pioneer in robotics-based inventory management) from ETH Zurich, Thierry Golliard from Swiss Post and Adrien Briod, the co-founder of Flyability.
In the afternoon, a panel discussion will explore how robots and artificial intelligence are changing the workplace. Experts will include Dario Floreano from NCCR Robotics and EPFL, Rafael Lalive from the University of Lausanne, Alisa Rupenyan-Vasileva from ETH Zurich, Agnès Petit Markowski from Mobbot and Pierre Dillenbourg from EPFL. Event participants will also have a chance to network that afternoon. The day will conclude with an awards ceremony to designate Switzerland’s best Master’s thesis on robotics. The booths and robot demonstrations will take place on both days of the event.
At NCCR Robotics, a new generation of robots that can work side by side with humans (fighting disabilities, facing emergencies and transforming education) is developed. Check out the videos below to see them in more detail.
A small, bead-like magnet used in a new approach to measuring muscle position. Image: Courtesy of the researchers
By Anne Trafton | MIT News Office
Using a simple set of magnets, MIT researchers have come up with a sophisticated way to monitor muscle movements, which they hope will make it easier for people with amputations to control their prosthetic limbs.
In a new pair of papers, the researchers demonstrated the accuracy and safety of their magnet-based system, which can track the length of muscles during movement. The studies, performed in animals, offer hope that this strategy could be used to help people with prosthetic devices control them in a way that more closely mimics natural limb movement.
“These recent results demonstrate that this tool can be used outside the lab to track muscle movement during natural activity, and they also suggest that the magnetic implants are stable and biocompatible and that they don’t cause discomfort,” says Cameron Taylor, an MIT research scientist and co-lead author of both papers.
In one of the studies, the researchers showed that they could accurately measure the lengths of turkeys’ calf muscles as the birds ran, jumped, and performed other natural movements. In the other study, they showed that the small magnetic beads used for the measurements do not cause inflammation or other adverse effects when implanted in muscle.
“I am very excited for the clinical potential of this new technology to improve the control and efficacy of bionic limbs for persons with limb-loss,” says Hugh Herr, a professor of media arts and sciences, co-director of the K. Lisa Yang Center for Bionics at MIT, and an associate member of MIT’s McGovern Institute for Brain Research.
Herr is a senior author of both papers, which appear in the journal Frontiers in Bioengineering and Biotechnology. Thomas Roberts, a professor of ecology, evolution, and organismal biology at Brown University, is a senior author of the measurement study.
Currently, powered prosthetic limbs are usually controlled using an approach known as surface electromyography (EMG). Electrodes attached to the surface of the skin or surgically implanted in the residual muscle of the amputated limb measure electrical signals from a person’s muscles, which are fed into the prosthesis to help it move the way the person wearing the limb intends.
However, that approach does not take into account any information about the muscle length or velocity, which could help to make the prosthetic movements more accurate.
Several years ago, the MIT team began working on a novel way to perform those kinds of muscle measurements, using an approach that they call magnetomicrometry. This strategy takes advantage of the permanent magnetic fields surrounding small beads implanted in a muscle. Using a credit-card-sized, compass-like sensor attached to the outside of the body, their system can track the distances between the two magnets. When a muscle contracts, the magnets move closer together, and when it flexes, they move further apart.
The new muscle measuring approach takes advantage of the magnetic attraction between two small beads implanted in a muscle. Using a small sensor attached to the outside of the body, the system can track the distances between the two magnets as the muscle contracts and flexes. Image: Courtesy of the researchers
In a study published last year, the researchers showed that this system could be used to accurately measure small ankle movements when the beads were implanted in the calf muscles of turkeys. In one of the new studies, the researchers set out to see if the system could make accurate measurements during more natural movements in a nonlaboratory setting.
To do that, they created an obstacle course of ramps for the turkeys to climb and boxes for them to jump on and off of. The researchers used their magnetic sensor to track muscle movements during these activities, and found that the system could calculate muscle lengths in less than a millisecond.
They also compared their data to measurements taken using a more traditional approach known as fluoromicrometry, a type of X-ray technology that requires much larger equipment than magnetomicrometry. The magnetomicrometry measurements varied from those generated by fluoromicrometry by less than a millimeter, on average.
“We’re able to provide the muscle-length tracking functionality of the room-sized X-ray equipment using a much smaller, portable package, and we’re able to collect the data continuously instead of being limited to the 10-second bursts that fluoromicrometry is limited to,” Taylor says.
Seong Ho Yeon, an MIT graduate student, is also a co-lead author of the measurement study. Other authors include MIT Research Support Associate Ellen Clarrissimeaux and former Brown University postdoc Mary Kate O’Donnell.
In the second paper, the researchers focused on the biocompatibility of the implants. They found that the magnets did not generate tissue scarring, inflammation, or other harmful effects. They also showed that the implanted magnets did not alter the turkeys’ gaits, suggesting they did not produce discomfort. William Clark, a postdoc at Brown, is the co-lead author of the biocompatibility study.
The researchers also showed that the implants remained stable for eight months, the length of the study, and did not migrate toward each other, as long as they were implanted at least 3 centimeters apart. The researchers envision that the beads, which consist of a magnetic core coated with gold and a polymer called Parylene, could remain in tissue indefinitely once implanted.
“Magnets don’t require an external power source, and after implanting them into the muscle, they can maintain the full strength of their magnetic field throughout the lifetime of the patient,” Taylor says.
The researchers are now planning to seek FDA approval to test the system in people with prosthetic limbs. They hope to use the sensor to control prostheses similar to the way surface EMG is used now: Measurements regarding the length of muscles will be fed into the control system of a prosthesis to help guide it to the position that the wearer intends.
“The place where this technology fills a need is in communicating those muscle lengths and velocities to a wearable robot, so that the robot can perform in a way that works in tandem with the human,” Taylor says. “We hope that magnetomicrometry will enable a person to control a wearable robot with the same comfort level and the same ease as someone would control their own limb.”
In addition to prosthetic limbs, those wearable robots could include robotic exoskeletons, which are worn outside the body to help people move their legs or arms more easily.
The research was funded by the Salah Foundation, the K. Lisa Yang Center for Bionics at MIT, the MIT Media Lab Consortia, the National Institutes of Health, and the National Science Foundation.